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United States Patent | 5,713,271 |
De Brock | February 3, 1998 |
For applying a surface pressure and temperature to pressing band-driven workpieces a fluid pressure medium is accommodated in a pressure chamber which is limited between a pressing band and a workpiece as well as seals located therebetween, and the fluid pressure medium is subjected to extensive forced movement in the pressure chamber which forms an action zone.
Inventors: | De Brock; Raoul (Kortrijk, BE) |
Assignee: | Firma Theodor Hymmen (Bielefeld, DE) |
Appl. No.: | 609856 |
Filed: | March 1, 1996 |
Jun 15, 1987[DE] | 37 19 976.5 |
Current U.S. Class: | 100/310; 100/151; 100/308; 100/312; 156/583.5; 425/371 |
Intern'l Class: | B30B 015/34 |
Field of Search: | 100/35,38,92,93 P,93 RP,151,152,153,154 156/583.5 425/371 |
2135763 | Nov., 1938 | Nicholson | 100/151. |
3734669 | May., 1973 | Ettel | 100/93. |
3992135 | Nov., 1976 | Camp, III | 425/371. |
4420359 | Dec., 1983 | Goldsworthy | 100/151. |
4541889 | Sep., 1985 | Held | 100/93. |